Product Features:1. Adopt all metal materials knob to make the operation smoother, and also enhance the reliability and durability;2. Adopt one drop notch design, tilt over the camera from horizontal to vertical position easily;3. Add two spirit level mounting sets, users can mount the removable spirit level to 3 sides of clamp;4. Safety stop relief grooves design, make sure the camera equipment is secure;5. Improved with a closer spherical form, so make the resistance increasing while the ball sliding to the side and also avoid the risk of making the ball suddenly slide down;6. Specialized design for panning base, smooth operation;7. Improve the ball and make it lighter.